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Finding the Fourth Proportional to 373,172.64, 514,992.12 and 212,055

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Solution

The fourth proportional to 373,172.64, 514,992.12 and 212,055 is: 292,643.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,172.64 : 514,992.12 = 212,055 : x
  2. Step 2: Convert to fraction form
    373,172.64/514,992.12 = 212,055/x
  3. Step 3: Cross multiply
    373,172.64x = 514,992.12 × 212,055
  4. Step 4: Simplify right side
    373,172.64x = 109,206,654,006.60
  5. Step 5: Solve for x
    x = 109,206,654,006.60/373,172.64
  6. Step 6: Final answer
    x = 292,643.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.